White House Chief of Staff John F. Kelly on Monday called Robert E. Lee “an honorable man” and said that “the lack of an ability to compromise” led to the Civil War,once again thrusting himself into the public spotlight on an emotionally charged issue.

The comments, made on the debut night of conservative media host Laura Ingraham’s show on Fox News, came after Kelly was asked about the recent decision by a Virginia church to remove plaques that honored the Confederate general and George Washington.

“I would tell you that Robert E. Lee was an honorable man,” Kelly told Ingraham. “He was a man that gave up his country to fight for his state, which 150 years ago was more important than country. It was always loyalty to state first back in those days. Now it’s different today. But the lack of an ability to compromise led to the Civil War, and men and women of good faith on both sides made their stand where their conscience had them make their stand.”

The comments came in the midst of an interview that touched on a wide range of topics including the indictments in the investigation by special counsel Robert F. Mueller, the United States’ relationship with China and Kelly’s work as the secretary of the Department of Homeland Security.

Long seen as a force of order and discipline in the White House, the retired Marine general became part of the controversy over the president’s calls to Gold Star families this month when he defended Trump’s statements to a widow, made false claims about a Florida congresswoman who had criticized the White House and said he would only take questions from reporters who knew families that had lost service members overseas. He told Ingraham on Monday that he did not believe he had anything to apologize for.

On Ingraham’s show, Kelly made the comments as part of a larger point about history as it is seen through a modern lens.

“I think we make a mistake, though, and as a society and certainly as, as individuals, when we take what is today accepted as right and wrong and go back 100, 200, 300 years or more and say what those, you know, what Christopher Columbus did was wrong,” he said. “You know, 500 years later, it’s inconceivable to me that you would take what we think now and apply it back then.”

The comments quickly touched off a cascade of strong reactions among progressives on social media.

In tweets, author Ta-Nehisi Coates pointed out that myriad compromises were made before the first battles of the Civil War.

“I mean, like, it’s called The three fifths compromise for a reason,” he wrote. “But it doesn’t stand alone. Missouri Compromise. Kansas-Nebraska Act.

“Lincoln’s own platform was a compromise. Lincoln was not an abolitionist. He proposed to limit slavery’s expansion, not end it. During the Civil War, Lincoln repeatedly sought to compromise by paying reparations — to slaveholders — and shipping blacks out the country.”

That would make Robert E. Lee a traitor to the United States and John Kelly a defender of said traitor. https://t.co/V3UxC6Wz9B

The country’s Civil War history has reemerged as a particularly potent and emotional fight, exploding into full view in August after a weekend of white nationalist rallies in Charlottesville protesting the planned removal of a Robert E. Lee statue devolved into violence. Trump’s comments on the rally brought the simmering racial tensions to the fore when he said there were “very fine people” on all sides of the debate. Of the push to take down the statue, he said, “You’re changing history; you’re changing culture.”

Many cities and states have begun debating how to address the Confederate statues that dot the South, with many choosing to remove the monuments. But the issue has taken an increasingly political turn since Charlottesville, emerging as an attack line in the gubernatorial race in Virginia.

Some polls have shown that the public is divided about the statues and what they represent. About 54 percent of Americans viewed the statues as symbols of Southern pride and not white supremacy, according to a poll from the Economist and YouGov in the summer.

While some contend that the Civil War was fought over states’ rights, scholars generally agree that slavery was the primary driver of the conflict.

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